Gas-stove



(No Model.)

L. BRIDGE.

GAS STVE.

4Patented May 29, 1888.

STATES @NITE @PATENT Fries.

LEWIS BRIDGE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE PENNSYLVANIA GLOBE GAS LIGHT COMPANY, OF PENNSYLVANIA.

GAS-STOVE.

CIYEICATION forming part of Letters Patent No. 383,793, dated May 29, 1888.

Application tiled December' '27, 1886. Serial No. 222,577. (No model.)

To' @ZZ 11171/0772, it may concern:

Be it known that I, LEWIS BRIDGE, of the city and county of Philadelphia, and State of Pennsylvania, have invented au Improvement in Gas-Stoves, of which the following is a specification.

My invention has reference to gas-stoves; and it consists in certain improvements, all of which are fully set forth inthe following speciio iication, and shown in the accompanyingdrawings, which form part thereof.

In carrying out my invention I provide a cylindrical case or shell containing one or more radiating cylinders through which the products of combustion are required to pass in finding an escape. The heated currents may be produced by one or more burners, as is fully set out hereinafter. The internal cylinder or cylinders radiate their heat and 2o thereby increase the normal temperature of the stove when in action. One or more of the cylindrical or annular passages formed by said cylinders may be cut out of action to reduce the temperature of the stove when desired.

The object of myinvention is to construct a cheap and effective gas-stove for general `household purposes, which shall give a maXimum of heat from a minimum consumption of gas. a

3o 'In the drawings, Figure I is a sectional elevation of a gas-stove embodying my invention on line x :v of Fig. 2, and Fig. 2 is a cross-section of saine on line y y of Fig. 1.

` A is the base of the stove,and may be made of-cast-iron with suitable airpassages for ascending air. Supported upon this base is a cast or sheet iron case, B,which may be of any suitable construction, and, if desired, formed with perforated or isiuglass windows or doors.

.lo C is a cap which lits over this case B and supports the cylinder D, the base of which may be made similar to case B. The cap C has a central opening, c, and, if desired, an annular or other suitable valve, G, to control the draft.

The cylinder D is mounted with the top casting, E, of the stove, which casting may be of any ornamental design and provided with a 'suitable register or valve, F.

We now come to the internal construction.

5o Supported upon the cap C, at the edge of the opening c, is a cylinder, H, of sheet metal, which extends up near tothe top of thestove.

I is a central cylinder arranged concentric to the cylinder H and is open at the top, the lower part passing down into the case B and out through the side thereof, forming the smoke or product outlet z'. A

J is a gas-burner arranged in the bottom of the case B, and K is another gasburnerin the bottom of chamber L and above the valve G. oo These gas-burners may be ot any well-known construction, and can be operated independently of each other, so that either orboth may be in action at one time. l

In operating, the action is as follows: To obtain the greatest heat, the valve G is opened and both burnersJ andK ignited. The pro ducts from the burnerJ pass upward through the case B, Vand divide, part passing through theanuular passage-Way c l\/I,and part through 7c the valve G to the burner K,where the balance of the oxygen is burned. The resulting products pass up through the annular passage L and unite with the products ascending the chamber or passageway M, and `then pass down the central tube or cylinder, I, and out at fi. If desired, part of the hot products' may be allowed to escape into the room by the valve or register F. It will be observed that all of the oxygen which passes up with 8o the products through the passage-way M will not be consumed, and, further, that when the gas of burner K is fully on all of the gas from the said burner will not be fully burned; hence these unburned gases are consumed at the top of the passages Land M and during their exit through central cylinderror .,215 tube. This second burning of the gases-and air insures a most intense heat, and isfacilitated by the intense-heating of these gases bego fore being consumed. From this it will be seen that there are essentially three distinct burniugs, which are made at successively higher temperatures, and hence produce the greatest caloric effect from the minimum of materials consumed. Every part of the stove is utilized to radiate heat into the room, and this radiating effect is wonderfully increased bythe use of the interior radiating-cylinders,

H and L. By controlling the valve G more 1oo sus or less air can be cut oii from burner K, and hence, if desired, the third consumption may be greatly increased at the top of passage-ways L and M at the expense of the consumption at burner K, or, if desired, both burners K and J. To reduce the temperature, the burners K and J may be shut off, or the burner J may be extinguished andthe valve G used to control the temperature of the burner K. In this latter case a current of cool air would pass up passage-way M and cool the interior of` the stove.

It will thus be seen that the regulation of the stove may be performed in the most perfect manner.

I do not limit myself to the mere details of construction, as they may be modified without departing from the invention. For instance, I might dispense entirely with the cylinder H and burner K, as the essential feature of the invention would still be embodied, which is the use of an interior radiating-cylinder, such as herein set out.

Having now described my invention,what I claim as new, and desire to, secure by Letters Patent, is-

1. In agas-stove,the combination of an outer casing or cylinder forminga combustion-chamber, a burner at ornear its bottom, a central radiatingcylinder entirely in elosed by the said outer casing and opening into it near its top, but without direct connection with the external air, and further being exposed on its outside to the products of combustion ascending inthe combustionehamber, and also adapted to receive part at least of said products of combustion through its upper end, which opens into the combustion-chamber, an elbowoutlet extending through said combustionchamber, opening from the bottom of said radiatingcylinder and located immediately above the burner, and a register or valve in the top of the stove-case above the central cylinder to allow part of' the products of combustion to escape into the room and part to enter the central elbow-outlet, the interior passages of the stove, where combustion takes place, be ing substantially closed to the air exterior to the stove, and draft-passages to the burner at the base of the stove.

2. In a gas-stove, the combination of three concentric passage-ways, all open at the top and communicating with each other, a gas-burner at or near the bottom of each of the two outer passageways, and a smoke-outlet connecting with the bottom of the inner passage-way, substantially as and for the purpose specied.

3. In a gas-stove, the combination of three concentric passage-ways, all open at the top and communicating with each other, a gas-burner at or near the bottom of each of the two outer passageways, a chamber into which the bottoms of the two outer concentric passage-ways open, and a smoke-outlet connecting with the bottom of the inner passage-way, substantially as and for the purpose specified.

4. In a gas-stove, the combination of three concentric passage-ways, all open at the top and communicating with each other, a chamber at the bottom communicating with the bottoms of the two outer passage-ways, a valve between the chamber and one of said outer passage-ways, a gas-burner above the valve, a second gasburner in the chamber below the two outer concentric passage-ways, and a smoke-outlet connecting with the bottom of the central or inner passage-way, substantially as and for the purpose specified.

5. The combination, in a stove, of the outer case or shell, the central outlettube, I, open at the top ,and made angular at the bottom, passing through the case of the stove to form an escapevflue at z', the gas-burner J, located within the stove-case and below the cylinder I, the second cylinder, H, forming the concentric passage-ways L and M, both open at the top, and a gasburner, K, in the bottom of passage- Way L and exterior to the cylinder H, substantially as and for the purpose specified.

6. The combination, in a stove, of the outer case or shell, the central outlet-tube, I, open at the top and made angular at the bottom,pass ing through the case of the stove to form an escape-flueati,thegasburner J, located within the stovecase and below the cylinder I, the second cylinder H, forming the concentric passage-ways L and M, both open at the top, and a gasburner, K, in the bottom of passageway L and exterior to the cylinder H, and a valve, G, to connect or disconnect the passages L Mat their bottoms, substantially as and for the purpose specified.

7. The combination, in a stove, of the outer case or shell, the central outlet-tube, I, open at the top andmade angular at the bottom, passing through the case of the stove to form an escape-flue at fi, the gas-burner J, located Vwithin the stove-case and below the cylinder I, the second cylinder, H, Vforming theconcentric passage-ways L and M, both open at the top, a gas-burner, K, in the bottom of passage-way L and exterior to the cylinder H, and a register, F arranged above the top of the passageway L M and cylinderI, substantially as and for the`purpose specified.

In testimony of which invention I hereunto set my hand.

LE'WIS BRIDGE.

Witnesses:

R. M. HUNTER, WILLIAM C. MAYNE.

ICC

IIC

IIS 

